i am using Dell Laptop and Apple i phone am using... According to my opinion these are the best company for mobile and laptop, and their performance is also excellent.
For Apple's laptop.
It's really preferred by most people that have used the laptop itself with mac os. Others might look at it as quite expensive deal but it has a reason why it's priced like that.
Because it has exclusive deals in it.
As for Dell's, one of the sturdiest brand that I've heard.
Best brands for you but not for others who prefer other brands.